Well-pumping apparatus.



. C, M.'HBETER.

WELL PUMPING APPARATUS. APPLICATION FILED JULY z2, 1909.

Patented Apr. 26, 1910.

Iiwwvr UNITED 'STATES PATENT @ERICE CHARLES lVi'. HEETER, 0F BUTLER,PENNSYLVANIA.

WELL-PUIVLPING APPARATUS.

T o all who-m it may concern:

Be it known that I, CHARLES M. HEETER, a resident of Butler, in thecounty of Butler and State of Pennsylvania, have invented certain newand useful Improvements in Tell-Pumping Apparatus, of which thefollowing is a specification. y

Wire cables have largely superseded strings of sucker rods for operatingdeep well oil pumps, the advantages of the cable over rods being wellrecognized by those skilled in the art. I-Iowever, one disadvantage ofthe cable has been the sluggish movement of the pump on the down stroke.liods provide a substantially rigid connection so that the plunger maybe pushed down as rapidly as desired, but obviously this cannot beaccomplished with a wire cable. The sluggish movement is due to thecontracted space through which the oil passes around the sinker orsinkers during such downward movement. lVith the tubing having an insidediameter of two inches, the sinkers are one and a half inches indiameter, thus leaving only a half inch clearance for the oil to flowpast the sinkers as the plunger lowers. As the sinkers are usuallythirty feet or more in length, this impediment to the downward movementwill be readily appreciated. The present invention overcomes thisdifficulty by so increasing the diameter of that part of the tubing inwhich the sinkers work as to provide ample clearance, and hence the downstroke is unobstructed and may be accomplished as rapidly as possible.

Figures l and 2 are views in vertical section of the lower portion of awell, illustrating the invention.

Referring thereto, 2 designates the pump cylinder or working barrel,provided with the usual standing or foot valve 3.

4 is the plunger which may be connected by rod or stem 5 to the lowerend of sinker 6. One or more of these sinker bars may be Specificationof Letters Patent.

Application led. July 22, 1909.

Patented Apr. 26, 1910.

Serial No. 508,892.

used, as required, with rope socket 7 connected to the upper endthereof.

8 is the wire rope or cable for operating the plunger, the same takingthe place of sucker rods which were formerly used eX- clusively for thispurpose.

Above the portion of tubing or working barrel 2 in which plunger 4operates, that portion 9 of the tubing in which sinker 6 and rope socket7 operate is enlarged to provide ample clearance for the oil to flowtherearound. Thus, with the parts proportioned as above indicated, theenlarged part of the tubing may be given an inside diameter of threeinches, instead of two inches as formerly, which provides ample space,and results in as rapid a downward stroke as may be desired.

The enlargement is preferably confined to that portion of the tubing inwhich the sinker and rope socket operate, for while tubing of theincreased Size might be eX- tended to the top of the well, it would be amere waste of material as the smaller diameter through which the cableoperates is ample for the outflow of oil.

I claim Well tubing having a working barrel portion and a portion ofincreased diameter above the working barrel and with an upper portion ofreduced diameter extending to the top of the well, in combination with astanding valve and a plunger for the barrel, sinker bars in the part ofthe tubing of enlarged diameter and connected to the plunger, and anoperating cable extending from the sinker bars upwardly through theupper portion of .the tubing of reduced diameter to the top of the well.

In testimony whereof I afliX my 'signature in presence of two witnesses.

`CHARLES M. IIEETER. Witnesses:

J. CAMPBELL BRANDON,

JAMES S. CAMPBELL.

